/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.ranger.audit.provider;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class StandAloneAuditProviderFactory extends AuditProviderFactory {
    private static final Logger LOG = LoggerFactory.getLogger(StandAloneAuditProviderFactory.class);

    private static volatile StandAloneAuditProviderFactory sFactory;

    private StandAloneAuditProviderFactory() {
        super();

        LOG.info("StandAloneAuditProviderFactory: created..");
    }

    public static StandAloneAuditProviderFactory getInstance() {
        StandAloneAuditProviderFactory ret = sFactory;

        if (ret == null) {
            synchronized (StandAloneAuditProviderFactory.class) {
                ret = sFactory;

                if (ret == null) {
                    ret      = new StandAloneAuditProviderFactory();
                    sFactory = ret;
                }
            }
        }

        return ret;
    }
}
